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To test all CPU coolers, we devised an easily repeatable test with no variables other than the coolers themselves. This ensures that figures from every cooler we test are comparable with each other.
Test rig
Using an open-air test bench, we deploy an Intel Core i7-4790K plugged into a Gigabyte Z97X-SOC Force motherboard. Alongside this is 16GB of 2400MHz Corsair Vengeance DDR3, as well as a 120GB OCZ Trion 150 SSD. Powering everything is a Corsair RM750x PSU.
The test process
Testing coolers involves taking a total of 4 temperature readings per cooler. First, we measure the idle temperature of the i7-4790K at stock speeds (turbo boost disabled), before measuring its temperature under load at stock speeds. Next, we overclock the CPU to 4.5GHz using a 1.3 Vcore, ensuring greater heat output. In its overclocked state we then measure the idle and load temperatures of the CPU again. The figures we present are temperature deltas – meaning we take each temperature reading and minus the ambient temperature from it. This allows us to test in an environment that is not temperature-controlled.
To ward off potential comments or questions, we know 4.5GHz using a 1.3 Vcore is not the ‘best’ overclock – this particular CPU could reach that frequency at closer to 1.25 on the Vcore, which is more efficient. That is not the point, however. We are trying to stress the coolers to see how they deal with excess heat … hence the higher than necessary Vcore.
Where possible, each cooler’s fans are plugged directly into the motherboard using the CPU_Fan or CPU_Opt headers. Some AIOs, however, ship with their own fan controllers or PWM hubs. If we are unable to plug the fans directly into the motherboard, it is specified in the performance section of the review.
An idle reading comes from leaving Windows on the desktop for 15 minutes. A load reading comes from running Prime95’s (version 26.6) Small FFTs test for 15 minutes – enough time for temperatures to plateau.
Noise output
Unfortunately I am unable to properly measure the sound output of CPU coolers using a digital sound meter. This is because I am based alongside a busy road (with high ambient noise levels). Using a sound meter is, as such, not possible as there are variables out of my control. However, I will try my best to subjectively describe the noise output in a helpful manner.
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not at all impressed by anything cooler master has released under the “new” branding of Master/Maker branding as they are either all overpriced to vastly over priced for the product delivered or just essentially “rebranding” via a few subtle design changes from what they had released years prior so they can charge more for a “premium model” type thing, often with the “old” legacy products performing better being of higher quality etc with a lower price point.(have never been fond of the steel mesh face for their cases, it looks nice and all, but is a potato to keep looking good)
The thermal paste/grease they have being MasterGel, MasterGel Pro, MasterGel Maker as well as ice fusion, Extreme Fusion X1, IC Essential E1/E2, Thermal Fusion 400 are all ok to very awesome performance for the price, wish thermal paste makers would have more included in each applicator 🙁
Need a TX3/103 there for comparison.
Much cheaper-been my go to for years………………..
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Did you test them with the push-pin or with the backplate method? Because AFAIK the push pin method makes a worse contact because of the lower mounting force